When I add my self-defined actions with icons to the toolbar, this works for 2 icons but then with the third one, the icons are suddenly magnified to double size and the toolbar doesn't fit into the window any more although that would have been no problem with the extra icon at original size.
You're talking about an icon and text toolbar, right? The icon space expands to the width of the longest text entry - gtk feature :( Devise shorter names for the actions, or use an icon only toolbar. Reopen this bug if I'm wrong.
Changes related to this bug have been committed. Please check latest Git and update the bug accordingly. You can also get the patch from: http://git.claws-mail.org/ ++ ChangeLog 2014-04-21 11:43:03.471526750 +0200 http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=9cbf04b2d6a755689d9c21fe8a374d3f1b30e315 Merge: 2588900 6467a95 Author: Colin Leroy <colin@colino.net> Date: Mon Apr 21 11:43:03 2014 +0200 Merge branch 'master' of file:///home/git/claws http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=6467a954acdc0f0e256f39f361ffcec44fabff3b Author: Colin Leroy <colin@colino.net> Date: Mon Apr 21 11:41:35 2014 +0200 Fix recognition of quoted parameter values, which are legal. http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=bd7c33e92da9c2e196113774ccd79a0a0d390a63 Author: Colin Leroy <colin@colino.net> Date: Mon Apr 21 11:02:45 2014 +0200 Fix bug #313, "Crash on reccurent events with no DTSTART" http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=e8333936df5110f9d0a8d73cafc41fcab595f831 Author: Colin Leroy <colin@colino.net> Date: Mon Apr 21 10:56:54 2014 +0200 Fix bug #3116, "invalid DTSTART in ics subscription makes claws crash"